This paper describes a body-space test developed by the author for use in the differential diagnosis of neurosis and psychosis. It consists of five drawings in crayon which can be rendered in forty minutes. The patient is asked to draw certain simple configurations. The decisive factor in evaluating the drawings is the way in which the patient places the various figures in the space.

Zierer has found that psychotics are not able to accept the three dimensional world and that this is evident in their painting. He goes on to tie up certain characteristics of the drawings with the different levels of libidinal development. The entire test is done without asking for any comment or association from the patient. Zierer claims that in this way he has been able to diagnose correctly eighty-six percent of some eighteen hundred patients he examined.